What is the value of x?
a.30 b.45 c.85 d.90

45°

Step-by-step explanation:

This is the inscribed angle, in which the angle is 1/2 of the opposite arc. The opposite arc for this question measures at 90°. Divide by 2.

90/2 = 45

45, or B)45° is your answer.

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is only a line? i think so

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.